scholarly journals COMMUNICATION BETWEEN THE MUSCULOCUTANEOUS AND MEDIAN NERVE: OCCURRENCE ON BOTH SIDES

2011 ◽  
Vol 01 (04) ◽  
pp. 55-56
Author(s):  
Remya K. ◽  
Ashwin Krishnamurthy ◽  
Kavitha K.
Keyword(s):  
Graduate Students ◽  
Median Nerve ◽  
Surgical Repair ◽  
Coracoid Process ◽  
Musculocutaneous Nerve ◽  
Upper Arm ◽  
Medical Academy ◽  
Communicating Branch ◽  
Male Cadaver ◽  
Entrapment Syndromes

AbstractCommunications between musculocutaneous nerve and median nerve may be of considerable significance to neurologists and orthopaedicians when dealing with patients of nerve entrapment syndromes of the upper limb. Many authors have mentioned about an occurrence of such a variation previously, but the presence of a communication between the two nerves in both the arms has not been cited to the best of our knowledge. During routine dissection on a 72 year old male cadaver for the under graduate students in the Department of Anatomy at K.S. Hegde Medical Academy, we encountered an anomalous communication between musculocutaneous and median nerve in both the upper limbs. The communicating branch arose from the musculocutaneous nerve at a distance of 12.6 cm and 12.5 cm from the tip of coracoid process on right and left side and joined the median nerve 16.2 cm from the same bony point. Communications between nerves like this may explain abnormal debilities in certain cases of trauma of the upper arm. Lack of awareness of such variations with different patterns of communications between musculocutaneous and median nerve might complicate surgical repair of the nerves.

scholarly journals Bilateral communication between musculocutaneous nerve and median nerve - a case report

2012 ◽  
Vol 01 (02) ◽  
pp. 096-098
Author(s):  
Dhanalakshmi V. ◽  
Santhi B. ◽  
Suba Ananthi K.
Keyword(s):  
Case Report ◽  
Median Nerve ◽  
Adult Male ◽  
Musculocutaneous Nerve ◽  
Communicating Branch ◽  
Male Cadaver ◽  
The Right

AbstractDuring routine dissection of an adult male cadaver, we observed bilateral communication between musculocutaneous nerve and median nerve. The level of origin of the communicating branch from musculocutaneous nerve was different in both arms. In left arm it arose before piercing coracobrachialis and in the right arm after piercing it. It is important to be aware of this variation while planning a surgery in the region of arm, as these nerves are more liable to be injured during operations. Any compression over the communicating branch may give rise to varying patterns of weakness that may impose difficulty in diagnosis for the neurologists.

scholarly journals Variation in the area of distribution of the lateral pectoral nerve and a communicating branch between musculocutaneous and median nerve : A case report

2015 ◽  
Vol 05 (04) ◽  
pp. 088-091
Author(s):  
Divia Paul A. ◽  
Manisha Rajanand Gaikwad
Keyword(s):  
Median Nerve ◽  
Biceps Brachii ◽  
Clinical Importance ◽  
Lateral Cord ◽  
Pectoral Nerve ◽  
Communicating Branch ◽  
Additional Branch ◽  
Before And After ◽  
Male Cadaver ◽  
Indian Male

AbstractVariations in the distribution of the lateral cord and its branches in the infraclavicular part of the brachial plexus are common and significant to the neurologists, surgeons, anaesthetists and the anatomists [1]. The present case describes a rare variation of the lateral pectoral nerve giving an additional branch to supply biceps brachii muscle and ends by joining inferior collateral branch of brachial artery. Also it was observed that the musculo cutaneous nerve received communicating branches from the median nerve before and after piercing the coracobrachialismuscle. The above observations were observed during routine dissection of a 55 year old Indian male cadaver. The musculocutaneous nerve, lateral pectoral nerve and its branches were identified and protected. The clinical importance of the variation is discussed.

scholarly journals Absence of the musculocutaneous nerve: a rare anatomical variation with possible clinical-surgical implications

2008 ◽  
Vol 126 (5) ◽  
pp. 288-290 ◽  
Author(s):  
José Humberto Tavares Guerreiro Fregnani ◽  
Maria Inez Marcondes Macéa ◽  
Celina Siqueira Barbosa Pereira ◽  
Mirna Duarte Barros ◽  
José Rafael Macéa
Keyword(s):  
Median Nerve ◽  
Lateral Surface ◽  
Biceps Brachii ◽  
Anatomical Variation ◽  
Musculocutaneous Nerve ◽  
The Third ◽  
Brachialis Muscle ◽  
Male Cadaver ◽  
The Right ◽  
Unknown Case

CONTEXT: The musculocutaneous nerve is one of the terminal branches of the lateral fasciculus of the brachial plexus, and is responsible for innervation of the flexor musculature of the elbow and for skin sensitivity on the lateral surface of the forearm. Its absence has been described previously, but its real prevalence is unknown. CASE REPORT: A case of absence of the musculocutaneous nerve that was observed during the dissection of the right arm of a male cadaver is described. The area of innervation was supplied by the median nerve. From this, three branches emerged: one to the coracobrachialis muscle, another to the biceps brachii muscle and the third to the brachialis muscle. This last branch continued as a lateral antebrachial cutaneous nerve. This is an anatomical variation that has clinical-surgical implications, considering that injury to the median nerve in this case would have caused unexpected paralysis of the flexor musculature of the elbow and hypoesthesia of the lateral surface of the forearm.

scholarly journals Five Roots Pattern of Median Nerve Formation

2016 ◽  
Vol 59 (1) ◽  
pp. 26-28 ◽  
Author(s):  
Konstantinos Natsis ◽  
George Paraskevas ◽  
Maria Tzika
Keyword(s):  
Brachial Plexus ◽  
Median Nerve ◽  
Brachial Artery ◽  
Clinical Applications ◽  
Upper Arm ◽  
Lateral Cord ◽  
Unusual Combination ◽  
Male Cadaver ◽  
Embryologic Development ◽  
Fourth Root

An unusual combination of median nerve’s variations has been encountered in a male cadaver during routine educational dissection. In particular, the median nerve was formed by five roots; three roots originated from the lateral cord of the brachial plexus joined individually the median nerve’s medial root. The latter (fourth) root was united with the lateral (fifth) root of the median nerve forming the median nerve distally in the upper arm and not the axilla as usually. In addition, the median nerve was situated medial to the brachial artery. We review comprehensively the relevant variants, their embryologic development and their potential clinical applications.

The Branching Pattern and Communications of the Musculocutaneous Nerve

2007 ◽  
Vol 32 (5) ◽  
pp. 560-562 ◽  
Author(s):  
A. KRISHNAMURTHY ◽  
S. R. NAYAK ◽  
L. VENKATRAYA PRABHU ◽  
R. P. HEGDE ◽  
S. SURENDRAN ◽  
...  
Keyword(s):  
Median Nerve ◽  
Peripheral Nerves ◽  
Anatomical Variation ◽  
Anatomical Variations ◽  
Clinical Findings ◽  
Musculocutaneous Nerve ◽  
Branching Pattern ◽  
Upper Limbs ◽  
Lateral Aspect ◽  
Upper Arm

Anatomical variations of peripheral nerves are important and can help explain otherwise incomprehensible clinical findings. A study of 26 right and 18 left formalin-preserved upper limbs identified the fact that the musculocutaneous nerve is subject to considerable anatomical variation, including communication with the median nerve. A study of its branching pattern made us aware of why debility after trauma to the lateral aspect of the upper arm may be more than expected, and this study considers the clinical and surgical importance of these variations of the musculocutaneous nerve.

scholarly journals Absence of Musculocutaneous Nerve: Embryological Basis

2013 ◽  
Vol 3 (2) ◽  
pp. 21-24
Author(s):  
Arvind Kumar Pankaj ◽  
CS Ramesh Babu ◽  
Archana Rani ◽  
Anita Rani ◽  
Jyoti Chopra ◽  
...  
Keyword(s):  
Brachial Plexus ◽  
Median Nerve ◽  
Ulnar Nerve ◽  
Lateral Root ◽  
Axillary Artery ◽  
Musculocutaneous Nerve ◽  
Medical Sciences ◽  
Lateral Cord ◽  
Pectoral Nerve ◽  
Male Cadaver

Variation of brachial plexus characterized by the absence of musculocutaneous nerve in right arm was found during routine dissection of a 54 year old male cadaver. After giving lateral pectoral nerve, rest of the lateral cord continued as lateral root of median nerve. An unusual branch was arising from lateral cord which crossed the axillary artery anteriorly and then divided into two branches. One of these branches joined ulnar nerve and other medial root of median nerve. All the muscles of front of arm were supplied by branches of median nerve. These variations are important for the anesthetists, surgeons, neurologists during surgery and for anatomists during dissection in the region of axilla. DOI: http://dx.doi.org/10.3126/ajms.v3i2.6626 Asian Journal of Medical Sciences 3(2012) 21-24

scholarly journals Unilateral variant motor innervations of flexure muscles of arm

2010 ◽  
Vol 01 (01) ◽  
pp. 51-53 ◽  
Author(s):  
A S Yogesh ◽  
M Joshi ◽  
V K Chimurkar ◽  
R R Marathe
Keyword(s):  
Median Nerve ◽  
Biceps Brachii ◽  
Musculocutaneous Nerve ◽  
Cutaneous Nerve ◽  
Lateral Cord ◽  
Separate Branch ◽  
Male Cadaver ◽  
Lateral Cutaneous Nerve ◽  
Muscular Branch ◽  
The Right

ABSTRACTThe musculocutaneous nerve usually branches out from the lateral cord of brachial plexus. It innervates the corcobrachialis, biceps brachii and brachialis muscles and continues as the lateral cutaneous nerve of forearm without exhibiting any communication with the median nerve or any other nerve. We report unilateral variation in motor innervations of the left arm in a 58-year-old male cadaver. The musculocutaneous nerve was found to be absent. A muscular branch of the median nerve was supplying the coracobrachialis muscle. In the middle of arm, the median nerve was found to be branching out, bifurcating and supplying the long and short head of biceps. The median nerve was found to be giving a separate branch, which supplied the brachialis muscle and continued as the lateral cutaneous nerve of forearm. The right sided structures were found to be normal. Surgeons should keep such variations in mind while performing arm surgeries.

scholarly journals A Variant Course of Lateral Root of Median Nerve: Embryological Basis

2013 ◽  
Vol 5 (2) ◽  
pp. 146-150
Author(s):  
Mumal Nagwani ◽  
Archana Rani ◽  
Anita Rani ◽  
Jyoti Chopra ◽  
Ajai Kumar Srivastava ◽  
...  
Keyword(s):  
Median Nerve ◽  
Lateral Root ◽  
Medical Science ◽  
Science Volume ◽  
Musculocutaneous Nerve ◽  
Male Cadaver ◽  
The Right

During routine dissection of the right arm of 50 year old male cadaver, we observed that the lateral root of median nerve was piercing the coracobrachialis muscle before joining the medial root of median to form the median nerve. The lateral root of median nerve did not give any branch within the muscle and no communication was observed between musculocutaneous nerve and lateral root of median nerve within the coracobrachialis muscle or in the later course of these two nerves. The same muscle was being pierced by musculocutaneous nerve which was giving branches to the muscle. These variations are important for the anesthetists, surgeons, neurologists during surgery and anatomists during dissection in the region of axilla. DOI: http://dx.doi.org/10.3126/ajms.v5i2.8195 Asian Journal of Medical Science, Volume-5(2) 2014: 146-150  

scholarly journals A Study on Incidence of Communicating branch between Musculocutaneous Nerve and Median Nerve

2021 ◽  
Vol 9 (2.1) ◽  
pp. 7936-7941
Author(s):  
T Naveen Sagar ◽  
◽  
M Venkata Raga Mayuri ◽  
Anshu Sharma ◽  
Rajat Subhra Das ◽  
...  
Keyword(s):  
Median Nerve ◽  
Digital Camera ◽  
The Body ◽  
Musculocutaneous Nerve ◽  
Surgical Approaches ◽  
Upper Limbs ◽  
Average Percentage ◽  
Communicating Branch ◽  
Study Results ◽  
Human Cadavers

Introduction: In present day Surgical practice it is mandatory to have a detailed idea of basic Anatomy and possible variations from normal pattern of all the major nerves and vessels in the body. One such important nerve in the body is Musculo Cutaneous nerve which is the chief nerve supplying the muscles of the front of the arm and also supplies the skin of lateral aspect of forearm. In the present study undertaken 58 upperlimbs were dissected and the incidence of communicating branch between Musculocutaneous Nerve and Median Nerve was studied. Aims and Objectives: The study is undertaken to know the incidence of communicating branch between Musculocutaneous Nerve and Median Nerve and its importance in surgical approaches of the upper limb. Materials and Methods: Under aseptic precautions, Standard dissection procedures were followed to dissect out the Musculocutaneous nerves and Median nerves in the 58 upper limbs of both right and left sides in the human cadavers of both sexes and the incidence of communicating branch between Musculocutaneous Nerve and Median Nerve were studied in detail and images were taken with digital camera for proper presentation of the study. Results and Conclusion: In the present study undertaken 7 upper limbs (12 percent) out of 58 upper limbs dissected showed the presence of communicating branch between Musculocutaneous nerve and Median nerve which comes under the category of type II of choi et al classification. on an average percentage of incidence of communicating branch between Musculocutaneous nerve and Median nerve varies between 10 percent to 53 percent. KEY WORDS: Musculocutaneous nerve, Median nerve and communication between Musculocutaneous nerve and median nerve.

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